1) continuous frequency shift
连续移频
1.
And then a approach for continuous frequency shift is proposed.
通过分析数控移相器的特点,给出了利用数控移相器实现对输入射频信号进行移频的基本方法;提出了一种进行连续移频的方法,设计并实现了数控移相器控制系统。
2) CPFSK
连续相位频移键控
1.
Basing on the requirement of the 38GHz communication system for maglev train and the theory of FSK,we analyze the character of CPFSK signal in this paper and design a practical and easily realized CPFSK modulator with the PLL.
从38 GHz磁悬浮车地通信系统要求和FSK调制的原理出发,分析了连续相位频移键控(CPFSK)信号的特征,通过简单、实用的锁相调制技术实现了CPFSK调制方案。
2.
Baseband pulse shaping is proposed to improve the overall performance of full response CPFSK signals because this technique makes reasonable tradeoff between Eb/N0 gain and bandwidth.
提出用基带预滤波技术改善完全响应连续相位频移键控(CPFSK)信号的综合性能,这一技术在等效Eb/N0增益与信号带宽方面进行了合理折衷。
3.
The Continuous Phase Frequency Shift Keying(CPFSK) signaling scheme has been widely used in mobile applications.
连续相位频移键控(CPFSK)信号广泛应用于便携式移动通信系统。
3) continuous-phase frequency shift keying(CPFSK)
相位连续移频键控
4) continuous phase frequency shift keying(CPFSK)
连续相位移频键控
5) continuous phase frequency shift keying(CPFSK)
连续相位频移键控
1.
A minimum mean-square error(MMSE) frequency-domain(FD) equalization algorithm based on single-carrier frequency-domain equalization(SC-FDE) for continuous phase frequency shift keying(CPFSK) was developed to improve equalization of the CPFSK signals transmitted over channels having long impulse responses.
为了解决连续相位频移键控(continuous phase frequency shift keying,CPFSK)信号在长时延扩展信道下的均衡难题,利用单载波频域均衡的思想提出了在最小均方误差(minimum mean-square error,MMSE)准则下最优的CPFSK频域均衡算法,包括线性均衡和非线性的判决反馈均衡。
2.
A minimum mean-square error frequency-domain equalization algorithm based on single-carrier frequency-domain equalization for continuous phase frequency shift keying(CPFSK) was developed to improve equalization of the CPFSK signals transmitted over channels having long impulse responses.
为了解决连续相位频移键控(continuous phase frequency shift keying,CPFSK)信号在长时延扩展信道下的均衡难题,利用单载波频域均衡的思想提出了在最小均方误差准则下最优的CPFSK频域均衡算法,包括线性均衡和非线性的判决反馈均衡。
6) consecutive election frequency
连续选频
补充资料：多普勒频移
多普勒频移
物理学术语。又称“多普勒频率”。由多普勒效应引起发射频率与运动目标反射波或散射波信号频率之间的频差。反射体引起的多普勒频移(fd)与发射频率(fs)的关系式为fd=(2Vcosθ)·fs，C为声速，V为反射体的运动速度，θ为反射体运动方向与声束指向之间的夹角。取超声诊断中的典型数据可算得血流。胎心检测中的多普勒频移(fd)均在声频范围之内，因此这类诊断仪器均可采用扬声器来监听。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条